package com.jiao.springcloud.service;


import com.netflix.hystrix.contrib.javanica.annotation.HystrixCommand;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixProperty;
import org.springframework.stereotype.Service;
import org.springframework.web.bind.annotation.PathVariable;

import java.util.UUID;
import java.util.concurrent.TimeUnit;

@Service
public class PaymentService {
    //正常访问 OK
    public String paymentInfo_OK(Integer id){
        return "线程池：  "+Thread.currentThread().getName()+"   paymentInfo_OK,id：  "+id+"成功……^_^";
    }

    //延时 模拟故障
    @HystrixCommand(fallbackMethod = "paymentInfo_TimeOutHandler",commandProperties = {
            @HystrixProperty(name="execution.isolation.thread.timeoutInMilliseconds",value = "3000")
    })
    public String paymentInfo_TimeOut(Integer id){
        try {
            TimeUnit.SECONDS.sleep(5);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
        return "线程池：  "+Thread.currentThread().getName()+"   paymentInfo_TimeOut,id：  "+id+"超时……^_^3秒钟";
    }
    public String paymentInfo_TimeOutHandler(Integer id){
        return "线程池：  "+Thread.currentThread().getName()+"   paymentInfo_TimeOutHandler,id：  "+id+"8001fallback";
    }

    //-------------服务熔断:10秒请求10次失败60%就跳闸
    @HystrixCommand(fallbackMethod = "paymentCircuitBreaker_fallback",commandProperties = {
            @HystrixProperty(name = "circuitBreaker.enabled",value = "true"),//是否开启断路器
            @HystrixProperty(name = "circuitBreaker.requestVolumeThreshold",value = "10"),//请求次数
            @HystrixProperty(name = "circuitBreaker.sleepWindowInMilliseconds",value = "10000"),//时间窗口期
            @HystrixProperty(name = "circuitBreaker.errorThresholdPercentage",value = "60")//失败率达到多少后跳闸
    })
    public String paymentCircuitBreaker(@PathVariable("id") Integer id){
        if (id <0 ){
            throw new RuntimeException("********id 不能为负数。");
        }
        //String serialNumber = IdUtil.simpleUUID();
        String serialNumber =  UUID.randomUUID().toString();
        return Thread.currentThread().getName()+"\t"+"调用成功，流水号为："+serialNumber;
    }
    public String paymentCircuitBreaker_fallback(@PathVariable("id") Integer integer){
        return "id不能为负数，请稍后再试~~~";
    }
}